* {
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    margin: 0;
    padding: 0;
}

ol, ul {
    list-style: none;
}

body {
    background: #fff;
    line-height: normal;
    overflow-x: hidden;
}

a {
    text-decoration: none;
}

.container {
    width: 75vw;
    margin: 0 auto 0 auto;
}

.flf {
    float: left;
    width: 100%;
}

.df_c_hv {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}

.df_c_v {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
}

.jcsb {
    justify-content: space-between;
}

.child_ts > * {
    transition: 0.3s;
    -webkit-transition: 0.3s;
}

.bfr:before {
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    z-index: -1;
    content: '';
}

